# iter_move(std::move_iterator)

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< cpp‎ | iterator‎ | move iterator

friend constexpr std::iter_rvalue_reference_t<Iter> iter_move( const std::move_iterator& i ) noexcept(/* see below */); |  | (since C++20)

Casts the result of dereferencing the underlying iterator to its associated rvalue reference type.

Equivalent to return std::ranges::iter_move(i.base());.

This function template is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::move_iterator<Iter> is an associated class of the arguments.

### Parameters

i | - | a source move iterator

### Return value

An rvalue reference or a prvalue temporary.

### Complexity

Constant.

### Exceptions

`noexcept` specification:
noexcept(noexcept(ranges::iter_move(i.base())))

### Example

Run this code

    #include <iomanip>
    #include <iostream>
    #include <iterator>
    #include <string>
    #include <vector>

    void print(const auto& rem, const auto& v)
    {
        std::cout << rem << '[' << size(v) << "] { ";
        for (char comma[]{0, ' ', 0}; const auto& s : v)
            std::cout << comma << std::quoted(s), comma[0] = ',';
        std::cout << " }\n";
    }

    int main()
    {
        std::vector<std::string> p{"Andromeda", "Cassiopeia", "Phoenix"}, q;

        print("p", p), print("q", q);

        using MI = std::move_iterator<std::vector<std::string>::iterator>;

        for (MI first{p.begin()}, last{p.end()}; first != last; ++first)
            q.emplace_back(/* ADL */ iter_move(first));

        print("p", p), print("q", q);
    }

Possible output:

    p[3] { "Andromeda", "Cassiopeia", "Phoenix" }
    q[0] {  }
    p[3] { "", "", "" }
    q[3] { "Andromeda", "Cassiopeia", "Phoenix" }

### See also

iter_move (C++20) | casts the result of dereferencing an object to its associated rvalue reference type (customization point object)
iter_move (C++20) | casts the result of dereferencing the adjusted underlying iterator to its associated rvalue reference type (function)
move (C++11) | converts the argument to an xvalue (function template)
move_if_noexcept (C++11) | converts the argument to an xvalue if the move constructor does not throw (function template)
forward (C++11) | forwards a function argument and use the type template argument to preserve its value category (function template)
ranges::move (C++20) | moves a range of elements to a new location (algorithm function object)
ranges::move_backward (C++20) | moves a range of elements to a new location in backwards order (algorithm function object)

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